[GHC] #14343: bad pretty-printing of types with promoted data types

[GHC]

#14343: bad pretty-printing of types with promoted data types
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        Reporter:  lspitzner         |                Owner:  andreash
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.1
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by andreash):

 * owner:  (none) => andreash


Comment:

 I started working on this in https://phabricator.haskell.org/D4746.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14343#comment:4>
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